 /*******************************************************************************
  * Copyright (c) 2000, 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal;

 import org.eclipse.jface.action.Action;
 import org.eclipse.jface.dialogs.ErrorDialog;
 import org.eclipse.ui.IPluginContribution;
 import org.eclipse.ui.IViewPart;
 import org.eclipse.ui.IViewReference;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchWindow;
 import org.eclipse.ui.PartInitException;
 import org.eclipse.ui.internal.registry.ViewDescriptor;
 import org.eclipse.ui.views.IViewDescriptor;

 /**
  * Show a View.
  */
 public class ShowViewAction extends Action implements IPluginContribution {
     private IWorkbenchWindow window;

     private IViewDescriptor desc;
     private boolean makeFast = false;
     
     
     /**
      * ShowViewAction constructor comment.
      */
     protected ShowViewAction(IWorkbenchWindow window, IViewDescriptor desc, boolean makeFast) {
         super(""); //$NON-NLS-1$

         // TODO: is this wart still needed?
 String accel = desc instanceof ViewDescriptor ? ((ViewDescriptor) desc)
                 .getAccelerator() : null;
         String label = desc.getLabel();
         setText(accel == null ? label : label + "@" + accel); //$NON-NLS-1$
 setImageDescriptor(desc.getImageDescriptor());
         setToolTipText(label);
         window.getWorkbench().getHelpSystem().setHelp(this,
                 IWorkbenchHelpContextIds.SHOW_VIEW_ACTION);
         this.window = window;
         this.desc = desc;
         this.makeFast = makeFast;
     }

     /**
      * Implementation of method defined on <code>IAction</code>.
      */
     public void run() {
         IWorkbenchPage page = window.getActivePage();
         if (page != null) {
             try {
                 if (makeFast) {
                     WorkbenchPage wp = (WorkbenchPage) page;
                     Perspective persp = wp.getActivePerspective();

                     // If we're making a fast view then use the new mechanism directly
 boolean useNewMinMax = Perspective.useNewMinMax(persp);
                     if (useNewMinMax) {
                         IViewReference ref = persp.getViewReference(desc.getId(), null);
                         if (ref == null)
                             return;

                         persp.getFastViewManager().addViewReference(FastViewBar.FASTVIEWBAR_ID, -1, ref, true);
                         wp.activate(ref.getPart(true));
                         
                         return;
                     }
                     
                     IViewReference ref = wp.findViewReference(desc.getId());
                     
                     if (ref == null) {
                         IViewPart part = page.showView(desc.getId(), null, IWorkbenchPage.VIEW_CREATE);
                         ref = (IViewReference)wp.getReference(part);
                     }
                     
                     if (!wp.isFastView(ref) && persp != null) {
                         persp.getFastViewManager().addViewReference(FastViewBar.FASTVIEWBAR_ID, -1, ref, true);
                     }
                     wp.activate(ref.getPart(true));
                 } else {
                     page.showView(desc.getId());
                 }
             } catch (PartInitException e) {
                 ErrorDialog.openError(window.getShell(), WorkbenchMessages.ShowView_errorTitle,
                         e.getMessage(), e.getStatus());
             }
         }
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.ui.activities.support.IPluginContribution#getLocalId()
      */
     public String getLocalId() {
         return desc.getId();
     }

     /*
      * (non-Javadoc)
      *
      * @see org.eclipse.ui.activities.support.IPluginContribution#getPluginId()
      */
     public String getPluginId() {
         return desc instanceof IPluginContribution ? ((IPluginContribution) desc)
                 .getPluginId()
                 : null;
     }
 }

